(setvar "OSMODE" 512)

(rtos (cadr def))

","

(princ)

(and (caddr def) (= 0 (getvar "FLATLAND")))

(setq pt1 (upoint 1 "" "指定箭头极点" nil nil))

(if inp inp def)

(setvar "cmdecho" cm)

V(getvar "OSMODE")

)

(if inp inp def)

(if

)

(setq PT2(cadr PT))

3、在CAD目次下的support目次内找到文件acad2000doc.lsp文件（CAD2002下，在此外版本CAD中也许不是这个名，这是CAD的自动加载文件）；

(setq msg (strcat "\n" msg ": "))

(if bpt

)

)

(setq PT3 (polar PT1 (angle PT1 PT2) (* #dwgsc arscl)))

1、起首拷贝下列lisp措施，用ar为名以记事本名目生涯，然后改后缀名为.lsp，作为一个lisp措施文件；措施如下：

(setq msg (strcat "\n" msg ": "))

)

)

)

)

（留意字符要为英笔墨符）

(setvar "CLAYER" L)

bit (* 2 (fix (/ bit 2)))

(initget bit kwd)

5、生涯后，从头启动CAD，在呼吁行就可输入ar呼吁直接画箭头了。

(strcat "," (rtos (caddr def)))

2、将ar.lsp拷贝至CAD目次下的support目次下；

(setq #dwgsc(getvar "DIMSCALE")

W(getvar "PLINEWID")

)

(setq arscl(ureal 7 "" "请输入箭头长度" arscl))

在中CAD中直接画箭头的呼吁的一个要领！！！
众所周知，在天正中可直接绘制箭头，缸筒，液压缸，而在AutoCAD中不得。最近我发明一个在呼吁行直接输入呼吁就可画出你想要的尺寸的箭头的要领，详细实验如下：

(setq inp (getreal msg))

(if def

(setvar "cmdecho" 0)

)

(setq msg (strcat "\n" (substr msg 1 (1- (strlen msg))) ": "))

(command "PLINE" pt1 "w" "0" (* #dwgsc (/ arscl 3)) pt3 "")

(if(= arscl nil)(setq arscl 0.1875))

)

(setq msg (strcat "\n" (substr msg 1 (1- (strlen msg))) ": "))

(rtos (car def))

)

(getpoint msg)

4、用记事本水平打开acad2000doc.lsp文件，插手一行：(load "ar.lsp")

L(getvar "CLAYER"))

(setvar "OSMODE" V)

(setvar "plinewid" W)

)

bit (* 2 (fix (/ bit 2)))

(initget bit kwd)

(princ)

msg (strcat "\n" msg "<" pts ">: ")

(if (= " " (substr msg (strlen msg) 1))

""

(setq ED(entget(car PT)))

(setvar "OSMODE" 1)

(if (= " " (substr msg (strlen msg) 1))

(if def

(setq inp

(setq cm(getvar "cmdecho"))

(setq pts (strcat

(setq msg (strcat "\n" msg "<" (rtos def) ">: ")

(getpoint msg bpt)